/**
 * RedisUtil.java
 * Created at 2017-11-8
 * Created by zhanghailin
 * Copyright (C) 2017 BROADTEXT SOFTWARE, All rights reserved.
 */
package com.broadtext.common.utils;

import java.io.Serializable;
import java.util.Set;
import java.util.concurrent.TimeUnit;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.core.ValueOperations;

/**
 * <p>ClassName: RedisUtil</p>
 * <p>Description: redis工具类</p>
 * <p>Author: zhanghailin</p>
 * <p>Date: 2017-11-8</p>
 */
public class RedisUtil {
    
    /**
     * 日志
     */
    private static Logger logger = LoggerFactory.getLogger(RedisUtil.class);
    
    private RedisTemplate<Serializable, Object> redisTemplate;

    /**
     * 批量删除对应的value
     * 
     * @param keys
     */
    public void remove(final String... keys) {
        for (String key : keys) {
            remove(key);
        }
    }

    /**
     * 批量删除key
     * 
     * @param pattern
     */
    public void removePattern(final String pattern) {
        Set<Serializable> keys = redisTemplate.keys(pattern);
        if (keys.size() > 0)
            redisTemplate.delete(keys);
    }

    /**
     * 删除对应的value
     * 
     * @param key
     */
    public void remove(final String key) {
        if (exists(key)) {
            redisTemplate.delete(key);
        }
    }

    /**
     * 判断缓存中是否有对应的value
     * 
     * @param key
     * @return
     */
    public boolean exists(final String key) {
        return redisTemplate.hasKey(key);
    }

    /**
     * 读取缓存
     * 
     * @param key
     * @return
     */
    public Object get(final String key) {
        Object result = null;
        ValueOperations<Serializable, Object> operations = redisTemplate.opsForValue();
        result = operations.get(key);
        return result;
    }

    /**
     * 写入缓存
     * 
     * @param key
     * @param value
     * @return
     */
    public boolean set(final String key, Object value) {
        boolean result = false;
        try {
            ValueOperations<Serializable, Object> operations = redisTemplate.opsForValue();
            operations.set(key, value);
            result = true;
        } catch (Exception e) {
            logger.error("set cache error", e);
        }
        return result;
    }

    /**
     * 写入缓存
     * 
     * @param key
     * @param value
     * @return
     */
    public boolean set(final String key, Object value, Long expireTime) {
        boolean result = false;
        try {
            ValueOperations<Serializable, Object> operations = redisTemplate.opsForValue();
            operations.set(key, value);
            redisTemplate.expire(key, expireTime, TimeUnit.SECONDS);
            result = true;
        } catch (Exception e) {
            logger.error("set cache error", e);
        }
        return result;
    }
    
    public long increment(final String key , long delta){
         return redisTemplate.opsForValue().increment(key, delta);
    }

    public void setRedisTemplate(RedisTemplate<Serializable, Object> redisTemplate) {
        this.redisTemplate = redisTemplate;
    }
    
}
